Molding-machine.



W. LEWIS in J. T. RAMSDBN.

MOLDING MACHINE. AFPLIUATIOH FILED Amm. 1909.

Patented Sept. 2, 1913.

Wi? 13G/ @y WIT/VESSESI- ANIMA/5V.

W. LEWIS I J. T. RAMSDEN.

MOLDING MACHINE. APPLICATION FILED APB.3.1900. 19072395. Patented Sept.2, 1913.

n Y@Y f W. LEWIS L J. T. RAMSDEN.

MOLDING MACHINE.

APPLIoATmN FILED APRA. 1909.

w www MUBNESSES:

W. LEWIS 6a J.. T. RAMSDEN.

MOLDING MACHINE.

AHLIUATIUN FILED Amm. 100s,

Patented Sept. 2, 1913.

w 6 d m 7 6 m a w w w m w M f @MM @s WVILFRED LEWIS AND JOHN T. RMSDEN,DTE i-ILADLPHIA, PlNNSYLVANIA, .AS- SIGNOIRS T THE TABOR MANUFACTURINGCi'L'lP-ANY, OF PHILADELPHIA, PENN- SYLVANIA, A CORPDRWUION Ol? NEWJERSEY.

MULDINCr-l'tIACI-ITNE.

Application tiled April 3, 1909.

Speccatlon of Letter s Patent.

at ented Sept. .13, lill 3. serial No. 487,7ii1.

To all fr0/0m n, may Cannero lo it known that we. llf'lilr'incn l'lnwisand. ,Toux T. .lansnrzx eitizens ot the United States, residing' atlhiladelphia, in the eountyv ot' Philadelphia and State ot Penn-Sylvania.y have jointly invented certain new and useful linproven'lentsin li/i'oldingdwa- (shines, ot whit-h the 'followingA i: a apeeiti-4illuatration in tin` aeeonipanyingi' desoriiiitive (lrawnigrs, inwh1eh-- ,Figure l, is a .aide vieivol the niaehine showing' theprineipal parts in one position and indieating in dotted lines anotherposition thereof. Fig'. in a top or plan view :drawing the inaehine withthe flash removed. Fin'. il, is an end view leaking` toward the riif'htin Figi. fl. Fig. 4,'is a aide view with parts hroken away, drawn to anenlarged seale. and illustrating details ot a patterr. plate looking`device. Fig. 5; is a `weetion or the line ot Fig. 4:., lookingV towardtlpe leitt. Fig. t3, is a top or plan view partly in section of aportion ot the device shown in Fie'. et, and Fins. T and S, arerespeetively an end and a transverse seetional View drawn to anVenlarged scale ot parts shown in Fig. 1t.

ri'tounted upon a suitable htistny traino or lsupport. l. there is; apieton and eylinde'f an ranged tor inovenient in vertital dire( tion.

As shown the Cylinder 2 resta` upon the 'traine 'l to whieh it` isatliaehed by bolts, not shown, and beneath this eylinde' a rai/ity Q istermed in the traine l, to receive the piaton 2l. whit-h is niovablevertieally in lne eylinder Q.

l, is a dost guard depending' t'eoni the piston eover or ea p 5, boltedto tlie piston as shown. This eap 5 carries a, horizontal I hat't orpivot ll and a vertieal Shaft or guide pin i'. 'The part 5 is thereforea hinge member.

The piston in the preaenti'ntanee is shown as hollow and may be. tilledwith a liquid whieh is toreed through an aperture (L as h v theintroduetion ot compressed air into the piston through the opening all,conneeed with ri aupplir ot eoinpreased air uned as :i souree ot power.and eoutrolled hiv an operating; valve` not` shown, et any well knowntype. l`he rompi-eased air whieh int'odueed into the piston 13 throughthe opening l--h in ita1 ap 5, nets upor. the liquid filling all thespare beneath and tor-ees 'it out ol. the piston into the :avity il,thus earsinpr the pistou fl to rise. Vr'hen the air in the piston il isallowed to eseape into the ati'ioaphr-re the weight ot' thel piston 3,eap 5. and parts sustained thereby. drives the lill iid out ot therarity im into the piston 3 airain, thus eansinnr the piston il todeaeend. The piston and eylinder are held against rotaiyanoveunint inreapeet to each other and tor this poi-pon*y a` guide pin i', isattached to the eap in an)1 eonvenient position. lhiel pin i', passesthrough a lug S on the eylinder 2 and the 'ap 5 is thus permitted torite and tall with thepiaten ti and is not pnrnitted to rotate about theaxis of the fiston 3.

Flask earryinlg' arms D and lll, are hinged to the hinge inernber or eap5, as at ll. These arms are Shown as eonueeted together at their outerends by a braee l2, and near their point ot pivotal support: hv a hraee3;

ln rear ot the pivot tl. the arms are provided with extensions l-lint't-ifral therewith and there are lost motion eouplings between theextensions litand the base ot the traine. These eouplinn's are :shown toeonsist ot" linha l'i. pivotalli' eonneehail with the hase l andaltaehed to a head iti. Through an openini.;` in the head lt. works theShank of a holt 'lil that is pivotally eonneeteil with the extensions'l/l: and provided with a nut and laitier sprintf lh.

ltl, are dust. guarda and Q0. is a springr shown an consisting ot twoparts with a movable. ring' interposed between. and this Spring 2t) it;plated between a support 2l, attached to the linka and a aleeve Q?. thateneireleS the Shank ol` the bolt li. and abuta on the ineinber 53V, b vwhieh the bolt'I li. is eonneeted to the pivot eyes: itl. the de-Seribed eouplinn'a are extended the part or sleeve 2Q will l ar upon thehead ltl and eontinned movement will bring the spring* lh to l .ar uponthe Ialeeve E29 when no lur ther Intwernenl ean take plaee exeept, bveoinpreasing' the spring' '18. The (couplings Ina;7 be freely eontraeteduntil they reaeh the position shown in Figs. T and S, and

:smo

. abut to limit the turning motion ot the arms in one direction.

The arms 9 and 10, are provided with projections 2G extending from theirinside surfaces inward and Which abut on the top surfaces of the stops25 fast to the cap 5, and

position the arms at right angles to the ver.

tical line of movement of the cap or hinge member 5. This occurs whenthe parts are in the position shown by the dotted lines in Fig. 1.

28, is a jarring head which comprises a base .ind 'a table 29, with apiston and cylinder interposed between them.

30, is a guide pin Working through a suitable eye for preventing rotarymotion of the table in its up and down movements.

, A31, are valve connections and 31, a supply connection. for the pistonand cylinder of the jarring` head.

The table 29, is adapted to Work up and down between the arms 9 and 10and their braces and is provided with flask pins a.

. 32, indicates the floor level 4which may be conveniently disposed asshown in the drawings, and in such ease the machine is arranged in apit.

ln use a flask 32, resting upon a pattern carrier or plate 33, is placedupon the jar'- ring head and is filled With sand in any convenient orappropriate manner and the sand is rammed by the ordinary operation otthe jarring head. The arms 9 and 10 remain at rest While the'jarringhead is in operation and may be supported upon the uprights 35, Whichunderlie the brace 12. ln Fig. 1, the jarring head is shownapproximately in its lowest position, so ythat the pattern plate 33 andflask 32 rest upon it. The pattern. plate, vflask and bottom board 34,are secured together after the ramming is complete, for example by meansof molding clamps', not shown. The pattern plate 33, maybe connectedWith the arms 9 and 19, as by means of the Wedges and.

, keepers 36 and 37', which will be presently described, and guide pins38 may also be provided; The piston 2, with its connected cap or hingemember 5, is then raised by the action o compressed air, as described.During the iirst part of this movement the couplings are extended, butthereafter the cushioning parts 18 collide with the sleeves 22, so thatthe length ol the couplings becomes fixed. In consequence of this thearms 9 and 10, and lask roll over about the pivot 11, as a center andare deposited upon the floor or upon any suitable rest as 38,l

arranged for their reception, as shown by dotted lines in Fig. 1. Thearms 9 and 10, remain attached to the pattern plate 33, but the flask isuncoupled and is supported on the rest 38. The stops 25, underlie andengage the parts 26 so that the arms 9 and 10, are held at right anglesWith the line of motion of the piston and cap or hinge member 5. T hehinge member or cap 5 is then caused to lift vertically and it carrieswith it the arms 9 and 10 and pattern plate, which remain at rightangles to it, by reason of the described lost motion in the couplingsand thus the pattern is drawn straight up out of the flask. Furtherrising motion of the cap or hinge member 5 returns the arms totheposition first described. During the descent ot' the cap or hingemember 5, the arms 9 and 10 and the iiask carried thereby are supportedupon the stops 25, and l the bolt 1 7 and member 23 are moving down, thebolts 17 through the spring supported sleeve 22, and the ymember 23 ismoving toward the upper endofVV 22. `When the flask is on or near therest 38, themember 23 abuts upon the upper end of the sleeve, .22, andthe spring 2O coming into compression balances the Weight of the cap o-rhinge member and parts carried thereby so that the llask 'is notburdened With this Weight.

The Wedges 36, Fig. Ll, have their shanks arranged for sliding motion inthe direction of the length of the arms 9 andlO, in suitable slotsformed therein. The keepers 37 are formed in the under face of thepattern carrier 33 and are thus protected from sand and the like, andthe keepers have slots With inclined sidewalls for the reception of theheads of the 'Wedges and for engagement therewith. There are rods 39,slidable lengthwise in bearings carried by the arms 9 and 10, and theserods are provided with collars 40, suitably secured to them. Springs ll,interposed between the collars 40 and Wedges 3G encircle the rods 39 andare disposed `in sleeves lprojecting laterally from the i posed in theair supply 44, may be respec` tively connected with the rods 39 andWithone or more of thevvedges 3G, so that when these, z. e. Wedges androds. move together there is no relative motion of the valve parts andthe valve remains closed and the ma 'fz-11a romeo the arms 9 and l0. Bymeans ot its arm llt,

this lever is connected with the rod 3S), so that when turned in lonedirection or the other, the bell crank lever moves the rod Cl) endwise.From the end 47, ot the sbait't, '.lt.

fixed to the'cap 5, ot the piston, projects an eccentric pin -flJ havinga link or in other words, having pitman connection with the arm 51, onthe bell crank lever ett). ,The link 52, pivo-ted at one end thereof tothe base l, or some part thereof, has slotsand-pin con neetion with theextension of' the arm t) and operates as a sait'ety device. the hingedtrame rolls over, the bar passes under the projecting end of the head 5,attached to the )lancer e and it' bv chance the hingedl C 7 o t frameshould remain in balance while the sustaining pressure in the cylinderis exhausted, the Weight oit' the moving parts will be caught upon theend ot the link .72 and held there. ()therwise the cylinder mightdescend While the hinged frame remained in standing balance and if theequilibrium should then be disturbed the hinged trame would roll overwithout resistance and'accumalate moinentmn so rapidly as to endangerthe stops 25 and 2G, when they came in eontact. The link therefore actsto prevent Athe descent of the cylinder unless the hinged frame rolls atthe same time and 'when it rolls no lost motion can be developed to endanger the tvorlv'ing parts ot the machine.

When the parts are in the position shown in Figs. .l and 4t, the wedgesBti, are clear ol. their keepers but as the arms t) and 1t), roll over or turn about the hinge at ll, the parts ltl, 50, 5l, lf3 and lt. operateto draw the wedges 3G up to their keepers 3T. In this way the patternplate or carrier is locked automatiealtv to the arms betere the latterroll over. The stud 5ft. passing throue'h an openingg` or aperture (l isenlarged-at inter- `vals 55. corresji finding; to the positions where aslow movement is de red, if. e., just before makina' contact with stop525 and when la ndmaj on .support P18 also when engaging` spring' stopslt. These enlargements :35 restrict the opening t3 and thus retard thedescribed low ot liquid at the proper times.

il" hat we claim is:

l. .it moldingr machine comprising a hinge member. a piston and cylindertor moving it vertically. flask earrvinr,r arms hinged to said memberand provided with rearward extensions, stops tor limiting the rise ot'the extensions to turn the arms when the hinged member rises, and a linkconnected to one ot said extensions und brought thereby under saidmember when elevated to act as a support in the event ol failure ot" thearms lo rotate, substantialbT as deseribed.

52. A molding machine comprising,r a hinge member, a piston and cylinderfor moving it vertically, arms pivotally connected with the hingemember, stops tor positioning@r the arms ar right angles with the hingemember and atl'ordinrT them a range ot' turning nmvement, a jarringrtable t'or the reception ot' the arms and having means tor operatinglit, rearward extensions from the arms, and lost motion couplings havinga limited range oit elongation and f fonneeted with the extensions torattording the arms alimited range ot vertical motion bel'ore turningrthem, sub stantially as described. 1

ln a machineot the type recited the combination with the hinge memberand means for raisingy and lowering; it, ot' arms pivotally connectedwith the hinge member and provided with rear "ard extensions.

stops for limitingA the movement ot the' arms, and 'devices connectedwith the extensions and adapted to afford them a limited range of"ei-tical movement and check them to turn the arms, substantially asdescribed. .4. The combination of flask receiving means. a jarring:table and means tor actu ating' it, a hinge member having: a piston andcylinder 't'or raising and loweringr it and arranged between thejarring; table and the flask receivingr means, arms pivotallv connectedwith the hinge member and having: means for arresting* them at rightangles: to the line of travel ot' said member. rearward extensions t'romthe arms. and devices connected with the extensions tor ati'ordina thehinge member a range ot' vertical motion without turning;v the arms andtor turning the arms when the motion ot the hinge member exceeds thatlimiterl range. substantially as described.

5. ln a machine ot the type recited the combination oit a hinge memberhaving;r means tor raisingr and loweringr it. llask carrying armspivoted to said member` couplings operating to turn thc arms. a patternplate provided with keeper?` rodsl carried b v the arms, wedges havingr`ifielding' connection with the rods and adapted to cooperate with thelzcepcrs. and means tor .sliit'tin` r the rods upon the turning ot` thearms` substantially as dcseribed.

ln a machine ot the t'vpc recited the combination ol' a pivotal tlask crrrying a rm, a rod and a 'tast'cning device carried h v the arm andhavingf yielding connection with each other. and a valve and a valvecasing;L iestu-ctively connected with the 'fasteningr device and rod.substantially as described.

T. The combination ol' pivotal [last: carrying arms yhaving rearwardextensions, a

hinge member to which the arms are pivota cylinder, a hollowpiston'having an aperture in its base, and a choke valve comprising astud penetrating the aperture and provided-with enlargement-s,substantially as described.

9. in a molding machine, a flask carrier, a tixedpiston, a cylindermovablev on the piston and operatively connected with said carrier toswing the same, and means to admit a 'fluid motive agent to thecylinder.

10. ln a molding machine, a flask carrier mounted to swing in a verticalplane, and a single pneumatic cylinder and piston connected to thecarrier, and operative to give the same a straight lift, and asubsequent rocking movement.

11. ln a molding machine, a flask carrier, and pneumatic means forrocking over the same to invert the flask, and to effect` a straightlitt or draw of the pattern in stripping. i

12. In a molding machine, a flask carrier, and a single power operatedmeans. forming a part of the machine structure, to rock over saidcarrier into stripping position, and to effect a straight lift ofthepattern.

13. In a molding machine', a flask carrier, and a single. pneumaticcylinder and piston coperative with said carrier to swing the latterfrom jolting to stripping position, and to then strip the pattern fromthe mold.

14. .in a molding machine, a flask carrier, and a single pneumaticcylinder and piston cooperative with said carrier to rock or swing thesame into stripping position, and then, preparatory to a rockingmovement in the reverse direction, to -give the carrier a straight liftfor stripping the mold.

15. ln a molding machine, a fiask carrier mounted to swing in a verticalplane, and power operated means forming a part ot' the machinestructure, to give the carrier a straight lift of varying. amplitude anda subsequent rocking movement.

16. .ln a molding machine, the combination of a base trame having ajolting support at one side and a stripping support at the oppositeside, a fiask carrier mounted to swing iu a vertical plane between andover said supports, and means for imparting a ,ses

straight lift to said carrier from either ot said supports and for thenrocking the same over to the other support.

17. ln a molding machine, a base trame having a jolting support at oneside and a stripping support at the opposite side, a pneumatic cylinderand p iston intermediate said supports, a flask carrier operated by saidcylinder and piston and movable thereby between said supports, and meansin connection with said cylinder and piston to provide for a straightlift of the carrier from either ot said. supports prior to the rockingor swinging movement et the carrier.

18. ln a molding machine, the combination of a base frame havingsupports at opposite sides, a fined piston rising from said frame, acylinder movable on said pis ton, means to admit a fiuid pressure mediumto said cylinder, and a .fiask carrier connected to said cylinder andarranged to loe swung thereby from one support to the othern 19. In arockover molding machine, the combination of a hinged mold table, anelevator device connected to the hinge of said table and providedwithmeans for arresting said table in horizontal position, and means forcausing said table to rock upon its hinge after this elevator device hasraised the table a given distance.

20. ln a rockover molding machine, the combination of a hinged moldtable, a vertically movable plunger connected to the hinge of saidtable, stops lon said plunger for arresting said table in horizontalposition, and means cooperating with said plunger to rock said tableafter it has been vertically elevated a given distance.

21. A. turnover and pattern drawing device for sand molding machinescomprising a plate for carrying a pattern and a flask, means forengaging with said plate to raise and turn the same, and means on. saidfirst named means for automatically locking said plate and said meanstogether during the raising and turning o said plate.

22. A turnover and pattern drawing device for sand molding machinescomprising a` plate for carrying a pattern and a flask, turnover armsfor engaging with said plate to raise and turn the same, and means onsaid turnover arms for automatically locking said plate land said armstcgether during the raising and turi ing of said plate.

ln testimony whereof we have hereunto signed our names.

WVILFRED LEWIS. JOHN T. MtlVlSDEN.l

